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How to INSTANTLY Run ANY Skill in Claude + Codex

Mark Kashef16 June 2026Watch on YouTube

Part of series

Ep. 1 · Claude Code Free

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Description

🎓 Master Agentic Workflows: https://www.skool.com/earlyaidopters/about 📂 Get Polyskill FREE: https://markkashef.gumroad.com/l/polyskill-kit 📅 Book a Call With Me: https://calendly.com/d/crfp-qz3-m4z ⏰ CHAPTERS: 0:00 The Claude Code vs Codex tribal war 0:24 The skill portability problem nobody's talking about 0:54 What we're building (one universal adapter) 1:34 Why the same skill behaves differently in each runtime 2:45 The two choices (and which one polyskill solves) 3:27 Anatomy of an Agent Skill 4:07 Claude Code skill anatomy (allowed-tools + dynamic injection) 5:04 Codex skill anatomy (sidecar + description cap) 5:59 How polyskill works (definition.md + adapters + CLI) 7:22 Install polyskill into both runtimes 8:03 Live demo: convert y-compare to Codex 8:43 Convert front-end-design skill (both directions) 9:33 Two-way conversion: Codex skill to Claude Code 10:24 What's next (rules, hooks, future runtimes) 10:51 Get the kit #polyskill #claudecode #codex #agentskills #claudeskills #aiagents #anthropic #openai #claudevscodex #claudecodetutorial #aiautomation #agenticos #crossruntime

What you'll learn

  • Polyskill solves the skill portability problem by creating one universal adapter that makes AI-agent skills portable between Claude Code and OpenAI Codex runtimes.
  • Claude Code and Codex use different architectures for skills: Claude Code uses allowed-tools with dynamic injection, while Codex employs a sidecar with description limits.
  • The Polyskill workflow consists of definition.md, adapters, and a CLI tool that lets you convert skills between runtimes in both directions.
  • Skills behave differently in each runtime due to architectural differences, making a standardized approach necessary for consistent implementation across platforms.

Frequently asked questions

What is the core difference between Claude Code and Codex skill architecture?
Claude Code uses allowed-tools with dynamic injection, while Codex works with a sidecar and has description limitations. These architectural differences cause the same skill to behave differently in each runtime.
How does two-way conversion work with Polyskill?
Polyskill converts skills between runtimes in both directions using definition.md, adapters, and a CLI tool. You can convert a Codex skill to Claude Code and back again.
What components form the anatomy of an AI-agent skill?
An agent skill consists of core components that vary per runtime: Claude Code contains allowed-tools and dynamic injection, while Codex integrates a sidecar with description. These elements define how a skill functions in its runtime.

Topics

ai agentsclaude codeagentic workflowsskill portabilitydevelopment tools

In this video

OpenAIOpenAI

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